First Trust Dow Jones Select MicroCap Index Fund Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| First Trust Dow Jones Select MicroCap Index Fund | First Trust Dow Jones Select MicroCap Index Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 18.62% | 12.73% | 13.01% | (11.56%) | 34.71% | (4.25%) | 27.25% | (12.68%) | 8.44% | 35.45% |